I try again to mimic MUI function in Reaction.
In MUI, you can start a program in iconified state using "set(app,MUIA_Application_Iconified,TRUE) ;".
With Reaction, Window seems to have to be opened before to be iconified. Therefore, you see the window a short time and it's iconified using "IDoMethod(win, WM_ICONIFY) ;"
I didn't find a Window.class parameter to start a window in iconified state.
Does it exist ?
Thank you (and sorry for all these newbies questions that I ask currently)